WO2004019320A1 - Procede et mecanisme pour le micro-organe de commande pzt de l'ensemble cadre de la tete magnetique d'une unite de disque dur - Google Patents

Procede et mecanisme pour le micro-organe de commande pzt de l'ensemble cadre de la tete magnetique d'une unite de disque dur Download PDF

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Publication number
WO2004019320A1
WO2004019320A1 PCT/CN2002/000588 CN0200588W WO2004019320A1 WO 2004019320 A1 WO2004019320 A1 WO 2004019320A1 CN 0200588 W CN0200588 W CN 0200588W WO 2004019320 A1 WO2004019320 A1 WO 2004019320A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupled
arm
strip
write head
micro
Prior art date
Application number
PCT/CN2002/000588
Other languages
English (en)
Inventor
Minggao Yao
Masashi Shiraishi
Yiru Xie
Original Assignee
Sae Magnetics (H.K.) Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sae Magnetics (H.K.) Ltd. filed Critical Sae Magnetics (H.K.) Ltd.
Priority to CNB028295048A priority Critical patent/CN100375151C/zh
Priority to PCT/CN2002/000588 priority patent/WO2004019320A1/fr
Priority to CNB028295021A priority patent/CN100375150C/zh
Priority to US10/351,082 priority patent/US7580226B2/en
Publication of WO2004019320A1 publication Critical patent/WO2004019320A1/fr

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/4806—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
    • G11B5/4826—Mounting, aligning or attachment of the transducer head relative to the arm assembly, e.g. slider holding members, gimbals, adhesive
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/4806—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
    • G11B5/4826—Mounting, aligning or attachment of the transducer head relative to the arm assembly, e.g. slider holding members, gimbals, adhesive
    • G11B5/483—Piezo-electric devices between head and arm, e.g. for fine adjustment
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5552—Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means

Definitions

  • the present invention relates to magnetic hard disk drives. More specifically, the present invention relates to a method of mounting a slider and a micro-actuator on a head arm assembly.
  • Figure 1 provides an illustration of a typical disk drive with a typical drive arm 102 configured to read from and write to a magnetic hard disk 104.
  • voice-coil motors (NCM) 106 are used for controlling a hard drive's arm 102 motion across a magnetic hard diskl06.
  • NCM voice-coil motors
  • micro-actuators 110 are now being utilized to 'fine- tune' head 108 placement.
  • a NCM 106 is utilized for course adjustment and the micro-actuator 110 then corrects the placement on a much smaller scale to compensate for the NCM's 106 (with the arm 102) tolerance. This enables a smaller recordable track width, increasing the 'tracks per inch' (TPI) value of the hard drive (increased drive density).
  • TPI 'tracks per inch'
  • FIG 2 provides an illustration of a micro-actuator as used in the art.
  • a slider 202 (containing a read/write magnetic head; not shown) is utilized for maintaining a prescribed flying height above the disk surface 104 (See Figure 1).
  • Micro-actuators may have flexible beams 204 connecting a support device 206 to a slider containment unit 208 enabling slider 202 motion independent of the drive arm 102 (See Figure 1).
  • An electromagnetic assembly or an electromagnetic / ferromagnetic assembly may be utilized to provide minute adjustments in orientation/location of the slider/head 202 with respect to the arm 102 (See Figurel).
  • Figure 3 describes one embodiment of a hard disk drive head gimbal assembly (HGA) with a 'U' -shaped micro-actuator.
  • HGA hard disk drive head gimbal assembly
  • a slider 302 is bonded at two points 304 to a 'U' -shaped micro-actuator 306.
  • the 'U' -shaped micro-actuator has a piezoelectric Lead Zirconate Titanate (PZT) beam (arm) 308 on each side of a Zirconia support frame (actuator base) 310.
  • the micro- actuator 306 is coupled to a suspension 312.
  • Figure 1 provides an illustration of an internal view of a hard disk drive including a drive arm configured to read from and write to a magnetic hard disk as used in the art.
  • Figure 2 provides an illustration of a micro-actuator as used in the art.
  • Figure 3 describes a hard disk drive head gimbal assembly (HGA) with a 'U'-shaped micro-actuator under principles of the present invention
  • Figures 4a-b provide an illustration of a metal frame PZT micro-actuator.
  • Figures 5a-c provide an illustration of a method of coupling the magnetic read/write head to the framing assembly.
  • Figures 6a-c provide an illustration of a first alternate method of coupling the magnetic read/write head to the framing assembly.
  • Figures 7a-c provide an illustration of a second alternate method of coupling the magnetic read/write head to the framing assembly
  • Figures 8a-c provide an illustration of a third alternate method of coupling the magnetic read/write head to the framing assembly.
  • Figures 9a-c provide an illustration of a fourth alternate method of coupling the magnetic read/write head to the framing assembly.
  • a system and method using a framing assembly to provide support for a micro- actuator and a magnetic read/write head and allow the micro-actuator and head to be connected to a suspension assembly is disclosed.
  • the framing assembly includes a base with two arms attached.
  • a crosspiece connects the two arms.
  • the framing assembly is metal and has strips of piezoelectric material attached to the arms.
  • FIG 4a One embodiment of a micro-actuator is illustrated in Figure 4a.
  • a framing assembly 402 is coupled to a magnetic read/write head 302.
  • the framing assembly has a base 404 with a pair of arms 406 extending from the base on opposite sides.
  • the base 404 is coupled to a suspension assembly on the head gimbal assembly. Additional pieces may be coupled to the base.
  • strips of piezoelectric Lead Zirconate Titanate (PZT) material 308 are attached to the exterior of the arms 406.
  • a crosspiece 408 connects the first arm 406 to the second arm 406, from an end opposite the base 404. The crosspiece can maintain 408 alignment of the arms as well as supporting the magnetic read/write head.
  • the framing assembly 402 is a metal frame.
  • An alternate embodiment of a micro-actuator is illustrated in Figure 4b. In this alternate embodiment, the strips of piezoelectric material 308 are attached to the interior of the arms 406.
  • FIG. 5 One method of coupling the magnetic read/write head to the framing assembly is illustrated in Figure 5.
  • FIG 5 a One embodiment of a framing assembly is shown in Figure 5 a.
  • the framing assembly has four PZT supports 502 extending from the crosspiece 408 and base 404.
  • a positioning support 504 extends normally from each of the arms 406.
  • a first hole 506 in the crosspiece 408 allows the introduction of a bonding agent between the base and the magnetic read/write head to firmly couple the head in place.
  • a second hole 508 in the base 404 allows the introduction of the bonding agent between the base 404 and the suspension assembly or between the base 404 and any other item attached to the framing assembly.
  • the bonding agent could be an ultraviolet cured epoxy, an anisotropic conductive film (ACF), a thermoplastic adhesive paste, a thermoplastic adhesive film, or another bonding agent.
  • a thermoplastic adhesive paste include silver filled electrically conductive paste, aluminum nitride filled thermally charged paste, and non-filled dielectric interposer paste.
  • a thermoplastic adhesive film include silver filled electrically conductive film, aluminum nitride filled thermally charged film, non-filled dielectric interposer film, and aluminum filled low flow dielectric film.
  • the strips of PZT material 308 and the magnetic read/write head 302 are coupled to the framing assembly 402 in Figure 5b.
  • a strip of PZT material 308 is coupled to each of the arms 406, the strip 308 resting on the PZT supports 502.
  • the head 302 is coupled to the crosspiece 408, with the positioning supports 504 maintaining alignment between the arms 406.
  • the completed micro-actuator is shown in Figure 5c.
  • One alternative embodiment of coupling the magnetic read/write head to the framing assembly is illustrated in Figures 6a-c.
  • a passive support 602 extends from each arm 406 at the end near the base 404.
  • a gripping support 604 extends from each arm near the crosspiece 408.
  • the strips of PZT material 308 and the magnetic read/write head 302 are coupled to the framing assembly in Figure 6b.
  • a strip of PZT material 308 is coupled to each of the arms 406.
  • the gripping support 604 holds the PZT strip 308 in place, pushing the strip 308 against the passive support 602.
  • the head 302 is coupled to the crosspiece 408, with no contact between the arms 406 and the head 302.
  • the completed micro-actuator is shown in Figure 6c.
  • FIGs 7a-c Another alternative embodiment of coupling the magnetic read/write head to the framing assembly is illustrated in Figures 7a-c.
  • This framing assembly has two arms 406 extending from the base 404, with no crosspiece connecting the two arms 406.
  • a slot 702 is present at the end of each arm 406. No supports are present on the arm.
  • the strips of PZT material 308 and the magnetic read/write head 302 are coupled to the framing assembly in Figure 7b.
  • a strip of PZT material 308 is coupled to the exterior of each of the arms 406.
  • the head 302 is coupled between the arms 406 at the end opposite the base 404.
  • Ultraviolet-cured epoxy, or some other bonding agent is introduced between the arms 406 and the head 302, using the slot 702 at the end of each arm 406.
  • a parallel space exists between the arms 406 and the head 302 in the area not covered by the bonding agent.
  • the completed micro-actuator is shown in Figure 7c.
  • FIGs 8a-c Another alternative embodiment of coupling the magnetic read/write head to the framing assembly is illustrated in Figures 8a-c.
  • the framing assembly has four PZT supports 802 extending from the crosspiece 408 and base 404. No positioning supports extend normally from the arms 406.
  • the strips of PZT material 308 and the magnetic read/write head 302 are coupled to the framing assembly in Figure 8b.
  • a strip of PZT material 308 is coupled to each of the arms 406, the strip 308 resting on the PZT supports 802.
  • the head 302 is coupled to the crosspiece 408, with no contact between the arms 406 and the head 302.
  • the completed micro- actuator is shown in Figure 8c.
  • FIGs 9a-c Another alternative embodiment of coupling the magnetic read/write head to the framing assembly is illustrated in Figures 9a-c.
  • the framing assembly has two PZT supports 902 extending from each arm 406 on the side opposite of the base 404 and crosspiece 408.
  • the strips of PZT material 308 and the magnetic read/write head 302 are coupled to the framing assembly in Figure 9b.
  • a strip of PZT material 308 is coupled to each of the arms 406, the strip 308 resting on the PZT supports 902.
  • the head 302 is coupled to the crosspiece 408 of the framing assembly on the side of the framing assembly opposite from the PZT strips 308.
  • the completed micro-actuator is shown in Figure 9c.

Abstract

Système et procédé mettant en application un ensemble cadre servant de support pour un micro-organe de commande et permettant à ce dernier d'être accouplé à un ensemble de suspension. Dans un mode de réalisation, cet ensemble cadre est constitué par une base à laquelle sont fixés deux bras. Dans un autre mode de réalisation, une traverse relie ces deux bras. Dans encore un autre mode de réalisation, cet ensemble cadre est métallique et des bandes de matériau piézo-électrique sont fixées à ses bras.
PCT/CN2002/000588 2002-08-26 2002-08-26 Procede et mecanisme pour le micro-organe de commande pzt de l'ensemble cadre de la tete magnetique d'une unite de disque dur WO2004019320A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CNB028295048A CN100375151C (zh) 2002-08-26 2002-08-26 用于协同定位pzt微致动器的悬架设计
PCT/CN2002/000588 WO2004019320A1 (fr) 2002-08-26 2002-08-26 Procede et mecanisme pour le micro-organe de commande pzt de l'ensemble cadre de la tete magnetique d'une unite de disque dur
CNB028295021A CN100375150C (zh) 2002-08-26 2002-08-26 硬盘驱动器的磁头万向架组件的pzt微传动器应用的方法和机械装置
US10/351,082 US7580226B2 (en) 2002-08-26 2003-01-23 Method and mechanism of the PZT micro-actuator application for the magnetic head gimbal assembly of the hard disk driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2002/000588 WO2004019320A1 (fr) 2002-08-26 2002-08-26 Procede et mecanisme pour le micro-organe de commande pzt de l'ensemble cadre de la tete magnetique d'une unite de disque dur

Publications (1)

Publication Number Publication Date
WO2004019320A1 true WO2004019320A1 (fr) 2004-03-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2002/000588 WO2004019320A1 (fr) 2002-08-26 2002-08-26 Procede et mecanisme pour le micro-organe de commande pzt de l'ensemble cadre de la tete magnetique d'une unite de disque dur

Country Status (3)

Country Link
US (1) US7580226B2 (fr)
CN (2) CN100375151C (fr)
WO (1) WO2004019320A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3975688B2 (ja) * 2001-04-23 2007-09-12 新科實業有限公司 ヘッド素子の微小位置決め用アクチュエータ、該アクチュエータを備えたヘッドジンバルアセンブリ及び該アクチュエータの製造方法
US7761348B2 (en) * 2003-12-30 2010-07-20 United Parcel Service Of America, Inc. Systems and methods for consolidated global shipping
US7218482B2 (en) * 2004-01-26 2007-05-15 Sae Magnetics (H.K.) Ltd. Micro-actuator, head gimbal assembly and manufacturing method thereof
US7701675B2 (en) * 2005-12-16 2010-04-20 Sae Magnetics (H.K.) Ltd. Micro-actuator mounting structure capable of maintaining a substantially constant gap between a top support of a micro-actuator and a suspension during use
CN101051495B (zh) * 2006-04-05 2010-05-12 广明光电股份有限公司 光盘驱动器传动装置
JP4930569B2 (ja) * 2009-10-14 2012-05-16 株式会社村田製作所 磁気ヘッド駆動用圧電セラミックアクチュエータ
US8324785B2 (en) * 2009-11-10 2012-12-04 The Regents Of The University Of California Piezoelectric actuators
US9406314B1 (en) 2012-10-04 2016-08-02 Magnecomp Corporation Assembly of DSA suspensions using microactuators with partially cured adhesive, and DSA suspensions having PZTs with wrap-around electrodes
US9123368B2 (en) 2013-10-29 2015-09-01 Seagate Technology Llc Data storage device with HGSA offset compensation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1276593A (zh) * 1999-06-03 2000-12-13 Tdk株式会社 具有精确定位致动器的磁头悬置装配体及其制造方法
CN1288559A (zh) * 1998-11-13 2001-03-21 Tdk株式会社 写/读头支撑机构以及写/读系统
CN1357880A (zh) * 2000-10-31 2002-07-10 Tdk株式会社 致动器和磁头万向组件及它们的制造方法、磁盘驱动器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5745319A (en) * 1992-08-12 1998-04-28 Kabushiki Kaisha Toshiba Recording/reproducing apparatus with coarse and fine head positioning actuators and an elastic head gimbal
US20010048573A1 (en) * 1997-12-17 2001-12-06 Tdk Corporation Magnetic head device and method of manufacturing same
US6215629B1 (en) * 1998-04-16 2001-04-10 Seagate Technology Llc Unitary synchronous flexure microactuator
US6362939B1 (en) * 1998-05-07 2002-03-26 Seagate Technology Llc. Balanced microactuator suspension
US6320730B1 (en) * 1998-09-26 2001-11-20 Seagate Technology Llc Low-stress disc drive microactuator cradle
US6414823B1 (en) * 1999-06-09 2002-07-02 Seagate Technology Llc Coil-structures for magnetic microactuator
US6198606B1 (en) 1999-07-28 2001-03-06 Seagate Technology Llc Disc drive actuation system having an injection molded magnetic micro-actuator with metal beam inserts and its method of fabrication
JP3675315B2 (ja) * 2000-08-24 2005-07-27 Ｔｄｋ株式会社 ヘッド素子の微小位置決め用アクチュエータを備えたヘッドジンバルアセンブリ及び該ヘッドジンバルアセンブリを備えたディスク装置
WO2003041062A1 (fr) * 2001-11-03 2003-05-15 Sae Magnetics (H.K.) Ltd. Procede et appareil pour ameliorer la fixation d'un micro-actionneur a un dispositif coulissant
US6376964B1 (en) * 2001-05-16 2002-04-23 Read-Rite Corporation Collocated rotating flexure microactuator for dual-stage servo in disk drives

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1288559A (zh) * 1998-11-13 2001-03-21 Tdk株式会社 写/读头支撑机构以及写/读系统
CN1276593A (zh) * 1999-06-03 2000-12-13 Tdk株式会社 具有精确定位致动器的磁头悬置装配体及其制造方法
CN1357880A (zh) * 2000-10-31 2002-07-10 Tdk株式会社 致动器和磁头万向组件及它们的制造方法、磁盘驱动器

Also Published As

Publication number Publication date
CN100375150C (zh) 2008-03-12
US20040037009A1 (en) 2004-02-26
CN1650351A (zh) 2005-08-03
CN100375151C (zh) 2008-03-12
CN1650352A (zh) 2005-08-03
US7580226B2 (en) 2009-08-25

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